Initial Commit

database/perl/lib/ExtUtils/ParseXS/Eval.pm

@@ -0,0 +1,97 @@
+package ExtUtils::ParseXS::Eval;
+use strict;
+use warnings;
+
+our $VERSION = '3.40';
+
+=head1 NAME
+
+ExtUtils::ParseXS::Eval - Clean package to evaluate code in
+
+=head1 SYNOPSIS
+
+  use ExtUtils::ParseXS::Eval;
+  my $rv = ExtUtils::ParseXS::Eval::eval_typemap_code(
+    $parsexs_obj, "some Perl code"
+  );
+
+=head1 SUBROUTINES
+
+=head2 $pxs->eval_output_typemap_code($typemapcode, $other_hashref)
+
+Sets up various bits of previously global state
+(formerly ExtUtils::ParseXS package variables)
+for eval'ing output typemap code that may refer to these
+variables.
+
+Warns the contents of C<$@> if any.
+
+Not all these variables are necessarily considered "public" wrt. use in
+typemaps, so beware. Variables set up from the ExtUtils::ParseXS object:
+
+  $Package $ALIAS $func_name $Full_func_name $pname
+
+Variables set up from C<$other_hashref>:
+
+  $var $type $ntype $subtype $arg
+
+=cut
+
+sub eval_output_typemap_code {
+  my ($_pxs, $_code, $_other) = @_;
+
+  my ($Package, $ALIAS, $func_name, $Full_func_name, $pname)
+    = @{$_pxs}{qw(Package ALIAS func_name Full_func_name pname)};
+
+  my ($var, $type, $ntype, $subtype, $arg)
+    = @{$_other}{qw(var type ntype subtype arg)};
+
+  my $rv = eval $_code;
+  warn $@ if $@;
+  return $rv;
+}
+
+=head2 $pxs->eval_input_typemap_code($typemapcode, $other_hashref)
+
+Sets up various bits of previously global state
+(formerly ExtUtils::ParseXS package variables)
+for eval'ing output typemap code that may refer to these
+variables.
+
+Warns the contents of C<$@> if any.
+
+Not all these variables are necessarily considered "public" wrt. use in
+typemaps, so beware. Variables set up from the ExtUtils::ParseXS object:
+
+  $Package $ALIAS $func_name $Full_func_name $pname
+
+Variables set up from C<$other_hashref>:
+
+  $var $type $ntype $subtype $num $init $printed_name $arg $argoff
+
+=cut
+
+sub eval_input_typemap_code {
+  my ($_pxs, $_code, $_other) = @_;
+
+  my ($Package, $ALIAS, $func_name, $Full_func_name, $pname)
+    = @{$_pxs}{qw(Package ALIAS func_name Full_func_name pname)};
+
+  my ($var, $type, $num, $init, $printed_name, $arg, $ntype, $argoff, $subtype)
+    = @{$_other}{qw(var type num init printed_name arg ntype argoff subtype)};
+
+  my $rv = eval $_code;
+  warn $@ if $@;
+  return $rv;
+}
+
+=head1 TODO
+
+Eventually, with better documentation and possible some cleanup,
+this could be part of C<ExtUtils::Typemaps>.
+
+=cut
+
+1;
+
+# vim: ts=2 sw=2 et: